/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Metadata/Accessors/PCGAttributeAccessorKeys.h
Retrieve in the given argument pointer of the wanted type. Need to be a supported type, such asFPCGPoint, PCGMetadataEntryKey or void. It will wrap around if the index goes outside the number of keys.
true if it succeeded, false otherwise. (like num == 0, unsupported type or read only)
template<typename ObjectType> bool GetKey ( int32 InStart, ObjectType *& OutObject )